Understanding the human body is a team effort. That's where the Yachtel group comes in.

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When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher in Taliatta.

China is notorious for its heavy smog.

It's incredibly bad.

Denise Mouserol, an atmospheric scientist at Princeton.

The air pollution in eastern China can be so bad that you can't clearly see across the street.

It can feel like you're walking through a heavy fog

that's burning your lungs. But smog has other damaging effects, too. Mouserol and her team have found

that in winter months, the smog in China's northeastern provinces, is so severe that it blocks more than

20% of sunlight from reaching the region's solar panels. The findings based on satellite data and photovoltaic performance models

are in the proceedings of the National Academy of Sciences.

One solution to the problem might be installing even more solar.

There's this virtuous cycle where if you use more solar electricity,

you can reduce your use of coal. And that will reduce the air pollution

levels. And that will then allow you to generate more solar electricity. China hopes to harvest 10% of its

electricity from solar by 2030. They'll need 400 gigawatts to get there, or about 10 times what we have

installed in the U.S. today.

It's an optimistic forecast for solar, and hopefully for China's air quality too.

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